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TerminatedNCT03948217METROPOLISUpdated Oct 23, 2023

The Effects of Artificial Lighting on Affective and Core Symptoms of Eating Disorder

An interventional study of Circadian Lighting regimen in Anorexia Nervosa and Eating Disorder, sponsored by Mental Health Services in the Capital Region, Denmark. Terminated at 1 site in Denmark. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2023-10-23.

Sponsored by Mental Health Services in the Capital Region, Denmark · Not applicable, Interventional, and Treatment

Why this study was terminated
changes to buildings why study was terminated prematurely

From the registry’s dates

  • Registered 1 year after the study started (first participant enrolled May 2018, registered May 2019).
Phase
Not applicable
Study type
Interventional
Enrollment
22
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The primary objective of this pilot study is to explore the effect of artificial lighting on affective symptoms, and the secondary aim is to explore the effect of artificial lighting on core symptoms of eating disorders (ED).

Several lines of evidence, albeit from hypothesis generation studies, suggest that artificial lighting may have a positive effect on well-being, mental health and affective symptoms in ED. The rationale of this study is to investigate the effects of artificial lighting on affective symptoms and cores symptoms of ED in inpatients undergoing weight restoration/treatment for ED.

Study design: Single-blind, controlled, pilot intervention study with circadian light (CL) comparing two CL regimens effects on mood symptoms.

Planned number of subjects: 16 patients with a ICD-10 diagnosis of Anorexia Nervosa, that completes exposure to at least three weeks of the two different CL regimens (L1 and L2) in any order.

Read the detailed description

The primary objective of this pilot study is to explore the effect of artificial lighting on affective symptoms, and the secondary aim is to explore the effect of artificial lighting on core symptoms of eating disorders (ED).

If an effect is indicated, the study will provide information on how to improve light exposure to ED patients in psychiatric treatment units. In addition, the outcomes may help identify a better system for measurement and adjustment of the specific light variables of colour temperature and light intensity.

Several lines of evidence, albeit from hypothesis generation studies, suggest that artificial lighting may have a positive effect on well-being, mental health and affective symptoms in ED. This is the rationale to investigate the effects of artificial lighting on affective symptoms and cores symptoms of ED in inpatients undergoing weight restoration/treatment for ED.

Study design: Single-blind, controlled, pilot intervention study with circadian light (CL) comparing two CL regimens effects on mood symptoms.

Planned number of subjects: 16 patients with a International Classification of Disorders 10 (ICD-10) diagnosis of Anorexia Nervosa, that completes exposure to at least three weeks of the two different CL regimens (L1 and L2) in any order.

Location: Mental Health Center Ballerup, department 14 (currently Department 5).

Diagnostic inventory: Eating Disorder Examination-Questionnaire (EDE-Q)

02

Conditions studied

  • Anorexia Nervosa
  • Eating Disorder

Keywords

  • artificial lighting
03

In context

Anorexia

411 studies on the registry are indexed under Anorexia; 67 are open to participants now.

This study's enrollment of 22 is below the median of 41 across 287 interventional studies indexed under Anorexia.

Browse Anorexia studies →

Lead sponsor

Mental Health Services in the Capital Region, Denmark is the lead sponsor of 51 studies on the registry; 9 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Primary diagnosis of Anorexia Nervosa (AN) or Bulimia Nervosa (BN) or Eating Disorder Not Otherwise specified (EDNOS)
  2. Age ≥18 and \<65

Exclusion criteria

Exclusion Criteria:

  1. Forced care
  2. Non-primary psychiatric disorder other than AN, BN, or EDNOS
  3. Binge Eating disorder
  4. Somatic unstable condition
  5. High suicidal behavior or risk
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Care provider)
Enrollment
22 participants (actual)

Study arms

  • Active comparator
    L1

    regimen L1 has overall higher intensity, higher color temperature and less light fluctuations

    Other: Circadian Lighting regimen

  • Active comparator
    L2

    regimen L2 has lower intensity, lower color temperature and more light fluctuations.

    Other: Circadian Lighting regimen

Interventions

  • OtherCircadian Lighting regimen

    Circadian lighting regimen with one major fluctuation, high light intensity and color

06

What researchers measure

Primary outcomes

  1. 3 week change in total score of Major Depression Inventory

    depression scoring, change in total score over three weeks. range 0-50. Higher values means more depressed. Mild depression: MDI total score from 21 to 25. Moderate depression: MDI total score from 26 to 30. Severe depression: MDI total score of 31 or higher.

    Time frame: 3 weeks change from baseline

  2. 3 week change in total score of Eating Disorder Inventory 2

    Eating disorder symptoms total score change over 3 weeks. range 0-273. Higher score means more Eating disorder symptoms.

    Time frame: 3 weeks change from baseline

  3. 3 week change in video images based measure of Physical activity

    video images based measure of quantity of physical activity

    Time frame: 3 weeks change in physical activity from baseline

Secondary outcomes

  1. 3 week change in BMI

    change in Body Mass index

    Time frame: 3 week change as a measure of weight change

  2. 3 week change in Visual analogue scale of mood

    self assessed measure of mood symptoms, range 1-10. Higher score means more symptoms and feeling worse.

    Time frame: 3 weeks change from baseline

  3. 3 week change in melatonin levels

    urinary levels of melatonin

    Time frame: 3 weeks change from baseline

  4. 3 week change in serotonin levels

    Blood levels of serotonin

    Time frame: 3 weeks change from baseline

  5. 3 week change in cortisol levels

    Urinary levels of cortisol as a measure of stress

    Time frame: 3 weeks change from baseline

07

Study locations

1 site
  • Mental Health Center
    Ballerup, Capitol Region 2750, Denmark
08

References and documents

Individual participant data

Plan to share: Yes — All patient data

Supporting information: Study protocol

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 23, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03948217
Lead sponsor
Mental Health Services in the Capital Region, Denmark
Collaborators
Aalborg University
Responsible party
Sponsor
First posted
May 13, 2019
Start date
May 1, 2018
Primary completion
Jul 31, 2018
Completion
Aug 31, 2018
Last update
Oct 23, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Oct 2023. You cannot join it, but the record below documents what was studied.

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